Give your hydraulic brake system a new source of pressure with the Dorman First Stop Brake Master Cylinder M390184, which turns pedal force into the hydraulic pressure that applies the brakes. It fits many vehicles, among them the 1994-1995 Ford F-250, the 1994-1996 Ford E-250 Econoline and the 1994-1996 Ford E-350 Econoline (all engines). It is a direct-fit replacement for the listed applications; see the "Vehicles it fits" section for the full list.
Dorman designed this unit to mirror the original master cylinder's design, function and performance. It is built from new, high-quality materials for a durable replacement.
- Precise replacement: the cylinder housing is built to match the casting material of the original part, intended to deliver similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely from new materials, with quality and safety in mind.
- Strict specifications: built to meet rigorous SAE International standards.
Specifications: aluminum master cylinder with a 1.125 in bore and three outlets. The rearward outlet size is 7/16-24, and the secondary outlet threads are 9/16-18 & 3/8-24. The reservoir and sensor are included, but mounting hardware is not. Consult the vehicle service information for the correct fasteners and whether the originals may be reused. Country of origin: China.
Signs that a master cylinder may need replacing include a soft or sinking pedal and fluid seeping from the unit. Other brake parts can cause similar symptoms, so diagnose the system first.
Frequently Asked Questions
Is this a direct-fit 1994-1995 Ford F-250 master cylinder?
Yes. M390184 is listed as a direct-fit replacement for the 1994-1995 Ford F-250 with all engines. Check the "Vehicles it fits" section to confirm your exact vehicle.
Does it fit the 1994-1996 Ford E-250 Econoline and the 1994-1996 Ford E-350 Econoline?
It is listed for the 1994-1996 Ford E-250 Econoline and the 1994-1996 Ford E-350 Econoline with all engines. The "Vehicles it fits" section shows every listed application.
What comes in the box?
The package contains one master cylinder, and the reservoir and sensor are included. Mounting hardware is not included.
What are the bore size and outlet threads?
It has a 1.125 in bore and three outlets. The rearward outlet size is 7/16-24, and the secondary outlet threads are 9/16-18 & 3/8-24.
What is this master cylinder made of?
The master cylinder is aluminum. All rubber components use a high-quality EPDM compound that resists glycol-based brake fluid, and the unit is built to meet SAE International standards.
